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浏览/检索结果: 共5条，第1-5条 帮助 限定条件 发表日期：2010    内容类型：会议论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 High precision test method for dynamic imaging of space camera (EI CONFERENCE) 会议论文 2010 IEEE International Conference on Advanced Computer Control, ICACC 2010, March 27, 2010 - March 29, 2010, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States Zheng G.-F.; Ma S.-F.; Sun J.-G.; Jin L.-X.; Zhang K. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 A test method for dynamic imaging of space TDICCD (Time Delay and Integration Charge Coupled Devices) camera was presented in this paper. The test method adopted the PLL (Phase Locked Loop) technology and CMAC (Cerebella Model Articulation Controller) friction compensation as control strategy. Furthermore  According to this method  a test system for dynamic imaging of space TDICCD camera was designed and implemented. The system simulated the movement of the ground objects relative to the space aerocraft  to validate the capability of image speed match and the dynamic imaging quality of TDICCD camera. The design adopted a precision turntable and a drift turntable to simulate the movement around the earth and the drift motion in different latitude due to the rotation of earth  of the aerocraft. The turntables were drived by permanent magnet torque motor which was powered by PWM (Pulse Width Modulation). The system adopted DSP (Digital Signal Processor) as the control core and reached a very high performance. The experimental results showed that the steady speed error was better than 0.01 % and the instantaneous speed error reached 0.0267%. The precision of the test system designed met the requirement for dynamic imaging of TDICCD camera. 2010 IEEE.   A 3.1-10.6GHz frequency synthesizer for MB-OFDM UWB transceivers 会议论文 作者:  Zhang, Hong;  Niu, Yangyang;  Tang, Shengdong;  Zhang, Ruizhi;  Chen, Guican 收藏  |  浏览/下载：4/0  |  提交时间：2019/12/18 Carrier frequency  CMOS technology  Current consumption  Fast switching  Multiband OFDM  Phase Locked Loop (PLL)  Single side-band mixers  Switching time   A Novel PLL for Grid Synchronization of Power Electronic Converters in Unbalanced and Variable-Frequency Environment 会议论文 作者:  Fang Xiong;  Wang Yue;  Li Ming;  Wang Ke;  Lei Wanjun 收藏  |  浏览/下载：1/0  |  提交时间：2019/12/18 Distributed power generation system (DPGS)  phase-locked loop (PLL)  positive sequence component detection  synchronous reference frame (SRF)   A novel frequency-adaptive PLL for single-phase grid-connected converters 会议论文 作者:  Fang, Xiong;  Wang, Yue;  Li, Ming;  Liu, Jinjun 收藏  |  浏览/下载：1/0  |  提交时间：2019/12/18 Frequency-adaptive  Grid-connected converters  Phase Locked Loop (PLL)  Single phase  Synthesis circuits   Single Phase Photovoltaic Grid-connected Inverse Power System Based on DSP 会议论文 2nd IEEE International Conference on Advanced Computer Control, MAR 27-29, 2010 作者:  Zhang Housheng;  Zhao Yanlei 收藏  |  浏览/下载：1/0  |  提交时间：2019/12/31 energy resources  solar cells  maximum power point tracking (MPPT)  photovoltaic array  grid-connected inverter  phase-locked loop(PLL)